Commit b13460b9 authored by Gavin Shan's avatar Gavin Shan Committed by Alex Williamson
Browse files

drivers/vfio: Rework offsetofend()



The macro offsetofend() introduces unnecessary temporary variable
"tmp". The patch avoids that and saves a bit memory in stack.
Signed-off-by: default avatarGavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent c8dbca16
......@@ -86,9 +86,8 @@ extern void vfio_unregister_iommu_driver(
* from user space. This allows us to easily determine if the provided
* structure is sized to include various fields.
*/
#define offsetofend(TYPE, MEMBER) ({ \
TYPE tmp; \
offsetof(TYPE, MEMBER) + sizeof(tmp.MEMBER); }) \
#define offsetofend(TYPE, MEMBER) \
(offsetof(TYPE, MEMBER) + sizeof(((TYPE *)0)->MEMBER))
/*
* External user API
......
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